Seeker of Skybreak, and Illusionist's Bracers

Prerequisites

• Seeker of Skybreak on the battlefield
• Illusionist's Bracers on the battlefield
• Seeker of Skybreak does not have summoning sickness
• Illusionist's Bracer attached to Seeker of Skybreak

Steps

1. Activate Seeker of Skybreak by tapping it, targeting itself
2. Illusionist's Bracers triggers, copying Seeker of Skybreak's ability targeting any other creature you control
3. Resolve both triggers, untapping Seeker of Skybreak and another creature you control
4. Repeat

Results

• Infinite mana creatures you control can produce
• Infinite untap of creatures you control